The big table below, represents the core overlapping utilities from the following projects,
and can be used to quickly see what's available where, as well as being a quick index
to the online manuals for each command.

This is not an exhaustive list of commands and is based on the union of POSIX and the
associated GNU/Linux projects. Developer oriented tools are excluded, since
these aren't as widely used or distributed.
Also excluded are commands always implemented as shell builtins.